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40-5
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02
Chapter 40 Configuring HSRP and Enhanced Object Tracking
Configuring HSRP
Default HSRP Configuration
Table 40-1 shows the default HSRP configuration.
HSRP Configuration Guidelines
Follow these guidelines when configuring HSRP:
• HSRP can be configured on a maximum of 32 VLAN or routing interfaces.
• In the procedures, the specified interface must be one of these Layer 3 interfaces:
–
Routed port: a physical port configured as a Layer 3 port by entering the no switchport
interface configuration command.
–
SVI: a VLAN interface created by using the interface vlan vlan_id global configuration
command and by default a Layer 3 interface.
–
Etherchannel port channel in Layer 3 mode: a port-channel logical interface created by using
the interface port-channel port-channel-number global configuration command and binding
the Ethernet interface into the channel group. For more information, see the “Configuring
Layer 3 EtherChannels” section on page 37-15.
• All Layer 3 interfaces must have IP addresses assigned to them. See the “Configuring Layer 3
Interfaces” section on page 11-31.
• The implementation of HSRP on Catalyst 3750-E and 3560-E switches is the same as that on
Catalyst 3750 and 3560 switches except for the differences summarized in the Cisco Software
Activation and Compatibility Document on Cisco.com.
Enabling HSRP
The standby ip interface configuration command activates HSRP on the configured interface. If an IP
address is specified, that address is used as the designated address for the Hot Standby group. If no IP
address is specified, the address is learned through the standby function. You must configure at least one
routing port on the cable with the designated address. Configuring an IP address always overrides
another designated address currently in use.
Table 40-1 Default HSRP Configuration
Feature Default Setting
HSRP groups None configured
Standby group number 0
Standby MAC address System assigned as: 0000.0c07.acXX, where XX is the HSRP
group number
Standby priority 100
Standby delay 0 (no delay)
Standby track interface priority 10
Standby hello time 3 seconds
Standby holdtime 10 seconds